63681171 has 8 divisors (see below), whose sum is σ = 85137360. Its totient is φ = 42339552.

The previous prime is 63681139. The next prime is 63681173. The reversal of 63681171 is 17118636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63681171 - 2⁵ = 63681139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63681173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27336 + ... + 29573.

It is an arithmetic number, because the mean of its divisors is an integer number (10642170).

Almost surely, 2^63681171 is an apocalyptic number.

63681171 is a deficient number, since it is larger than the sum of its proper divisors (21456189).

63681171 is a wasteful number, since it uses less digits than its factorization.

63681171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57285.

The product of its digits is 6048, while the sum is 33.

The square root of 63681171 is about 7980.0483081245. The cubic root of 63681171 is about 399.3346668598.

The spelling of 63681171 in words is "sixty-three million, six hundred eighty-one thousand, one hundred seventy-one".